/usr/include/Wt/Chart/WGridData is in libwt-dev 3.3.3+dfsg-4.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 | // This may look like C code, but it's really -*- C++ -*-
/*
 * Copyright (C) 2013 Emweb bvba, Leuven, Belgium.
 *
 * See the LICENSE file for terms of use.
 */
#ifndef CHART_WGRIDDATA_H
#define CHART_WGRIDDATA_H
#include <Wt/Chart/WAbstractGridData>
#include <Wt/Chart/WCartesian3DChart>
#include <Wt/WPen>
namespace Wt {
class WAbstractItemModel;
class WMemoryResource;
  namespace Chart {
  class WCartesian3DChart;
/*! \class WGridData
 *  \brief Class representing grid-based data for a 3D chart.
 *
 * General information can be found at WAbstractDataSeries3D. The model for 
 * this dataseries is structured as a table. One of the columns (by default 
 * index 0) contains the x-axis values, one of the rows (by default index 0) 
 * contains the y-axis values. All other values in the table contain the 
 * z-value corresponding to the x- and y-values with the same column- and 
 * row-index.
 *
 * \ingroup charts
 */
class WT_API WGridData : public WAbstractGridData {
public:
  /*! \brief Constructor
   */
  WGridData(WAbstractItemModel *model);
  virtual ~WGridData();
  virtual double minimum(Axis axis) const;
  virtual double maximum(Axis axis) const;
  
  /*! \brief Set which column in the model is used as x-axis.
   *
   * The default column that is used has index 0.
   */
  void setXSeriesColumn(int modelColumn);
  /*! \brief Returns which column in the model is used as x-axis.
   *
   * \sa setXSeriesColumn()
   */
  int XSeriesColumn() const { return XAbscisColumn_; }
  /*! \brief Set which row in the model is used as y-axis.
   *
   * The default row that is used has index 0.
   */
  void setYSeriesRow(int modelRow);
  /*! \brief Returns which row in the model is used as y-axis.
   *
   * \sa setYSeriesRow()
   */
  int YSeriesRow() const { return YAbscisRow_; }
  
  // below = internal API
  virtual int nbXPoints();
  virtual int nbYPoints();
  virtual WString axisLabel(int u, Axis axis) const;
  virtual boost::any data(int i, int j) const;
protected:
  virtual int countSimpleData() const;
  virtual void pointDataFromModel(FloatBuffer& simplePtsArray,
				  FloatBuffer& simplePtsSize,
				  FloatBuffer& coloredPtsArray,
				  FloatBuffer& coloredPtsSize,
				  FloatBuffer& coloredPtsColor);
  virtual void surfaceDataFromModel(std::vector<FloatBuffer>& simplePtsArrays);
  virtual void barDataFromModel(std::vector<FloatBuffer>& simplePtsArrays,
				std::vector<FloatBuffer>& coloredPtsArrays,
				std::vector<FloatBuffer>& coloredPtsColors);
private:
  void findRange() const;
  int XAbscisColumn_;
  int YAbscisRow_;
};
  }
}
#endif
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